package com.web;

import com.pojo.User;
import com.service.UserService;
import com.service.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @Discription:
 */
public class LoginServlet extends HttpServlet {
    UserService userService=new UserServiceImpl();
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1、获取参数
        String username = req.getParameter("username");
        String password = req.getParameter("password");

        //调用XXXservice.login处理业务
        User loginUser = userService.login(new User(null, username, password, null));
        //如果等于null说明登录失败
        if (loginUser==null){
            //把错误信息，和回显的表单项信息，保存到request域中
            req.setAttribute("msg","用户名或密码错误");
            req.setAttribute("username",username);
            System.out.println("用户名或密码错误，登录失败");
            req.getRequestDispatcher("/pages/user/login.jsp").forward(req,resp);
        }else{
            req.getRequestDispatcher("/pages/user/login_success.jsp").forward(req,resp);
        }
    }
}
